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Use After Free Affecting kernel-bootwrapper package, versions <0:3.10.0-327.4.5.el7

Severity

 Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    0.04% (1st percentile)

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  • Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-5103113
  • published 26 Jul 2021
  • disclosed 19 Jan 2016
Report a new vulnerability Found a mistake?

Introduced: 19 Jan 2016

CVE-2016-0728 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-bootwrapper to version 0:3.10.0-327.4.5.el7 or higher.
This issue was patched in RHSA-2016:0064.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The join_session_keyring function in security/keys/process_keys.c in the Linux kernel before 4.4.1 mishandles object references in a certain error case, which allows local users to gain privileges or cause a denial of service (integer overflow and use-after-free) via crafted keyctl commands.

References

CVSS Scores

version 3.1
Expand this section

NVD

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

Red Hat

8.4 high